/Engine/Source/Runtime/Engine/Public/Instances/InstancedPlacementPartitionActor.h
The base class used by any editor placement of instanced objects, which holds any relevant runtime data for the placed instances.
class AInstancedPlacementPartitionActor : public [AISMPartitionActor](API\Runtime\Engine\ISMPartition\AISMPartitionActor)
TMap<FGuid,TU...
PlacedClientInfo
Placed Client info by corresponding client Guid.
FGuid
PlacementGridGuid